Betz, F., & Holzwarth, C. H. (1933). A second German book. American book company.
芝加哥风格引文Betz, Frederick, 与 Charles Homer Holzwarth. A Second German Book. New York: American book company, 1933.
MLA引文Betz, Frederick, 与 Charles Homer Holzwarth. A Second German Book. American book company, 1933.
警告：这些引文格式不一定是100％准确.